Dear all, I am trying to use a motor model based mixer, I was able to load the new pre-computed mixing matrix (the one to be cast to the structure Rotor of the class MultirotorMixer) in the place of the nominal one corresponding to my drone configuration and I modified the function mix to correspon…

Try to power it on with the safety button pressed down. This should force the IO board into bootloader mode.

Can you try to do px4io stop, then px4io update?

I cannot stop it tells me px4io is not started, and when I do update it gives the same errors

Could it be that the new code is too heavy to fit the PX4IO memory?

It could be that something goes wrong and the IO is now not responding so you are unable to command it to reboot into bootloader mode. I think the only solution at this point is the safety button option. In theory you just need to short one of the pins, from looking at the the Dropix pinout my gu…

I just checked the firmware I am using, the safety check is already forcedly bypassed (I have everywhere safety_off = true in the io_handle_status function of px4io.cpp)

I don’t think that matters to trigger the bootloader.

You are right I was able to trigger it using your trick! Now I still have the load mixer error, which I’ll try to debug by myself for now… Thank you Julian :slight_smile:

Hi, Joheart Do you have any findings about the mixer load error?

Hi, it was a hidden nasty bug in my code

PX4IO bootloader fail with new mixer

PX4 Autopilot

Benjamin August 30, 2020, 11:40pm 15

Dear Julian,
Please visit PX4IO fail and help me

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PX4IO bootloader fail with new mixer

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